Comments on “Linear Systems and Nonunity Feedbackâ€

In the above paper generalized error coefficients were defined with respect to an equivalent transfer function for nonunity feedback systems. The inadequacy of the accepted definition of error io a particular situation and the distinction between the actuating error and system error in view of the nonunity feedback are brought to the fore in this correspondence. The most general definition of error is also pointed out. Copyright © 1977 by The Institute of Electrical and Electronics Engineers. Inc.